One of the fun things to watch in Iowa during the summer is the corn rapidly develop! It only takes a few weeks for corn to tassel and then silk. The featured chart shows the period between growing degree day values 610 and 1000 for Ames based on a specified planting date. This period is roughly the time between corn tasseling and silking. The color of the bar represents the number of days it took to transverse this interval. Only very late planted corn in May has yet to reach 1000 GDUs.

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Tags:   gdd